The present 44th Da’i-e-Mutlaq or Da'i uz-Zamaan (the da'i of the present time) i.e. the representative (naa'ib) of Imaam uz-Zamaan (the imaam in the progeny of Imaam Taiyeb), Saiyedna Abu Haatim Taiyeb Ziyauddin Saheb (tus) has continued his predecessor's endeavors with particular emphasis on strengthening the community's Islaamic practices by promoting and spreading awareness about the Faatimid identity and Isma'ili legacy. His birthplace is Badri Mohalla, Vadodara and coincidently his birth date falls on 4th Rabi’ ul-Aakhar 1351 AH/6th August 1932 AD, when 21st Faatemi Imaam Taiyeb was born in Egypt on the same date in 524 AH/22 February 1130 AD. Under the graceful hands of his grandfather, the 42nd Da'i, Saiyedna Fidaali Badruddin, he completed his education and during the Da’iship of his beloved father, the 43rd Da'i, Saiyedna Yusuf Nooruddin, he being Ma’zoon (a spiritual status after da’i) at that time shouldered the responsibility of educating people for the betterment of the community. Now that he is on a status of Da’i-e-Mutlaq, on 4th Rabi’ ul-Aakhar 1404 AH/7th January 1984 AD, he appointed his eldest son Haatim Zakiyuddin as his successor and elevated him on the status of Ma’zoon-e-Mutlaq. He appointed his son Mohammad Nooruddin on the status of Mukaasir-e-Mutlaq on 7th Rajab 1430 AH/29th June 2009 AD after the demise of his son Mukaasir-e-Mutlaq Dr. Husain Mo’eenuddin on 13th Shawwaal 1429 AH/12th October 2008 AD. The status of Ra's ul-Hudood is headed by his youngest son Dr. Zulqarnain Hakeemuddin.
He paved the way to conduct mass marriages with minimal expenses, revamped the syllabus of Madrasah Taiyebiyah by making the learning of Lisaan ud-da’wat compulsory for all pupils, guided to publish a number of books highlighting Alavi faith and practices, conceptualized community website and monthly newsletter, eased the matrimonial complications by making Devdi Mubaarak (the office of ad-Da’wat ul-Haadiyah) the centre of all these activities, promoted youth activities, women welfare, medical centers and camps, educational skills for teachers, higher education, literacy, trade and business etc. He has fixed the mehr of Rs. 1000/- (which was previously Rs. 200/-) for the marriage proposal given to the bride and it is on a discretionary power of an individual to give or not to give anything apart from mehr. There is no concept of dowry and one is free to arrange anything for the marriage of her daughter as per his financial condition, but under the pre-defined religious laws. His tenure of Da'iship is marked by the constructions of new mosques, guest houses (musaafir-khaanas), mausoleums and community halls.
Publications meant for religious knowledge and awareness (deeni ma’lumaat) proved prime objective of his Da'iship. Knowing that the books are the mother of discipline, he always emphasized in reading good things for fruitful results. Several books highlighting Isma’ili-Taiyebi faith and facts were published to make his followers conscious of their religious and social duties. Books such as Kitaab ul-Walaayah - how sincerity is incumbent on a follower for his imaam, Makhzan ul-Masaa’il - Q&A relating to wide range of topics strengthening the knowledge of a beginner, Lisaan ud-Da’wat – 3 books for learning the language of Da’wat in detail, Mansak – 2 books guiding a pilgrim for Hajj and ‘Umrah, Nisf ul-Layl – different prayers with translation, Anwaar ul-Qur’an – different chapters of Qur’an with translation, Shahrullaah Saheefah – containing detailed account of Ramazaan, Misbaah – consisting of all the supplications (du’as) with translation which an Alavi Bohra recites from dawn to dusk, Saheefah Taiyebiyah – comprehensive account of each and every aspect of religious obligations of an Alavi, Ad’eeyat us-Salaat – meant for the students of Madrasah Taiyebiyah etc.